
# grade = int(input("请输入成绩"))
grade  =10
#第一层
if grade>100 or grade<0:
    print('不合规')
else:
    if grade>=60:

        if 100>=grade>90 :
            print("A")
        elif grade <= 90 and grade >80 :
            print("B")
        else:
            print("及格")
    else:
        print('不及格')

key = 2
match grade//10:
    case 9:
        print("A")
    case 8:
        print("B")


a = 12 if 1==1 else 56 if 2>9 else 24 if 111>10 else 19

print(a)
count = 0
while count<10:

    if(count==3):
        break
    count+=1
    print(count)
else:
    print(count)
#
# for i in range(0,10):
#     print(i)